AngularJS过滤器(Filters)

最新推荐文章于 2025-06-07 11:54:37 发布

原创最新推荐文章于 2025-06-07 11:54:37 发布 · 430 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#angularjs

AngularJS学习专栏收录该内容

9 篇文章

订阅专栏

本文详细介绍了AngularJS中过滤器的使用方法，包括内置过滤器如currency、date、json等的功能及应用，以及如何通过在表达式和指令中添加过滤器来格式化数据显示。此外，还介绍了如何创建自定义过滤器以实现更复杂的数据处理需求。

过滤器的作用是格式化数据．

过滤器包含:

currency

date

filter

json

limitTo

lowercase

number

orderby

uppercase

使用方法：

1. 在表达式中添加过滤器

<div ng-app="myApp" ng-controller="personCtrl">

<p>The name is {{ lastName | uppercase }}</p>

</div>

<script>
angular.module('myApp', []).controller('personCtrl', function($scope) {
    $scope.firstName = "John",
    $scope.lastName = "Doe"
});
</script>

2. 在指令中添加过滤器

<div ng-app="myApp" ng-controller="namesCtrl">

<p>Looping with objects:</p>
<ul>
  <li ng-repeat="x in names | orderBy:'name'">
    {{ x.name + ', ' + x.country }}
  </li>
</ul>

</div>

<script>
angular.module('myApp', []).controller('namesCtrl', function($scope) {
    $scope.names = [
        {name:'Jani',country:'Norway'},
        {name:'Carl',country:'Sweden'},
        {name:'Margareth',country:'England'},
        {name:'Hege',country:'Norway'},
        {name:'Joe',country:'Denmark'},
        {name:'Gustav',country:'Sweden'},
        {name:'Birgit',country:'Denmark'},
        {name:'Mary',country:'England'},
        {name:'Kai',country:'Norway'}
        ];
});
</script>

3. 自定义过滤器

使用filter()函数

<div ng-app="myApp" ng-controller="myCtrl">
    <p>{{name|myFormat}}</p>
</div>
<script>
    var app = angular.module('myApp', []);
    app.filter('myFormat', function() {
        return function(name) {
            var txt = "";
            for (var i = 0; i < name.length; i++) {
                txt += name[i].toUpperCase();
            }
            return txt;
        }
    });
    app.controller('myCtrl', function($scope) {
        $scope.name = "John";
    });
</script>